Airplane



FIG. 1 is a front elevational view of an airplane showing my new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a left side elevational view, a right side view being identical;

FIG. 4 is a top plan view;

FIG. 5 is a bottom plan view;

FIG. 6 is a front elevational view of a second embodiment of an airplane showing my new design;

FIG. 7 is a rear elevational view thereof;

FIG. 8 is a left side elevational view, a right side view being identical;

FIG. 9 is a top plan view thereof; and,

FIG. 10 is a bottom plan view thereof. 

The ornamental design for an airplane, as shown and described. 